The first part of that tutorial has you visibly check for AIS signals in SDR#. So if you can visibly see them on the spectrum, then you know that they are there and that you should be able to receive them. If you see nothing, then you need to upgrade/move your antenna etc. You can also use the visual FFT SDR# to determine the PPM offset if you don't have a TCXO dongle, and find the optimum gain setting that gives the best SNR, and avoids overload.

In the Aisdeco2 tutorial it mentions that it "directly connects to the RTL-SDR (requires no audio piping)". This is more desirable than piping audio, and it only requires you to open one program, and it can also then monitor both AIS channels easily.

If you use the alternative decoders like AISMon or ShipPlotter, then you'd need to pipe the audio of one channel from SDR#.

Hello
I have the same problem but in present case, for sure SDRSHARP isn't running.
I am using windows10. Zadig installed bulk in interface 0. SDRsharps works well
when I start aisdeco2 I receive a message